Device for inserting bristles in brush-backs



(No Model.)

B. KIPPER.

DEVICE FOR INSERTING BRISTLES IN BRUSH BACKS.

Patented Jan. 12; 1886.

N. PETERS. Phola lhhogmbher. Wishingmm D.C4

UNTTE STATES ATENT Trice.

EMIL KIPPER, OF ADAMS, MASSACHUSETTS.

DEVICE FOR INSERTlNG BRISTLES IN BRUSH-BACKS.

EFFECIFIOATION forming part of Letters Patent No. 334,121, dated January 12, 1886.

Application filed December 12, 1884. Serial No. 150,192.

To all whom it may concern:

Be it known that I, EMIL KIPPER, a subjcct of the King of Prussia, residing at Adams, Massachusetts, have invented new and useful Improvements in Devices for Inserting Bristles into Brush-l3acks or I'Iolders,of which the following is a specification.

The object of the present invention is to provide a device or guide for inserting bristlesinto brush backs or blocks and holding said brush-back while the bristles are being secured in place by embedding them in cement and performing other operations prior to attaching a covering plate or cap.

The invention consists in the employment of a guide-block having a series of inclined holes provided with flaring mouths, to facilitate the insertion of the bristles, said perforated guide block being adapted for the reception and retention of the brush back into which the bristles are to be inserted. The brush back having the bristle-holes punched or drilled therein is placed upon the guide-block so as to cause the holes inthe latter and in the brush back to register with each other, when the bristles can be inserted into the bruslrback by passing them through the guide-block. The

brush-back is retained in position upon the guide-block by a clamping ring or plate having an undercut inner edgewhich overlaps and engages directly upon the edge of the brush-back, and is itself secured in place by set-screws and nuts or other clamping devices. After the bristles have all been inserted into the brush-back they are subjected to operations for permanently securing them in place, and then, before or alter the removal of. the brush-back from the guide-block, the cap or covering plate is applied to the brush-back and secured in the ordinary manner.

In the drawings, Figure 1 is a vertical sectional view of my improved device for holding brush-backs and inserting bristles into the same. Fig. 2 is aplan or top view of the same. Fig. 3 is a detail sectional view.

The reference-numeral 1 designates a block, which is made of metahhard-rubber, wood, or other suitable material, and has a series of holes, 2, pierced through the same. These holes extend obliquely through the block, or are so arranged as to conform to the inclined (No model.)

disposition of the bristles in a brush-back. The lower portions of the holes 2 are made flaring, so as to present enlarged months 3, for the purpose hereinafter stated. On the upper side of the block 1 lies a ring or apertured plate, 4, which ismad'e of metal or other hard material, and is secured to the block 1 by means of screw-bolts 5, passing through the same and the block, and having set-nuts 6 applied thereto, as is shown in Fig. 1. The headed upper ends of the bolts rest in recesses made in the plate at, as represented by dotted lines, Fig. 1, so as to be flush with the upper face thereof. The aperture in the plate 4 is made oval, rectangular, or any other shape couforming to the contour or shape of the brushbacks designed to be filled with bristles, and the edge of this aperture is undercut, as at 7, so as to overlap and directly engage the edge of the brush-back to securely hold it in a fixed position. This undercut edge may be formed as shown in Fig. 1, or be in the form of a rabbet, as shown in Fig. 3.

The manner of using my device in manufacturing that class of brushes having tufts of bristles inserted into perforated bacligs or hold ers, is follows, viz: A brush-back, 1Q, havi g a series of inclined holes punched oi: drilled \W thereln, is placed upon the guide-Noon 1, s0 as to have its holes register with the holes 111 the guidcblock. The brush-back is then secured in position, or prevented from moving in any direction whatever, by causing the apertured plate l,that surrounds the brushback, to clamp the edge or edges of the latter in a manner that will be-evident from Fig. l of the drawings. The tufts or bunches of bristles are then inserted into the bruslrback by passing them through the perforated guide-block, and sufficiently far through the brush-back or plate to leave the bristles projecting above the same. This having been done, a cement or plastic mass is poured over the projecting portions of the bristles to such a depth as will cause the bristles to be firmly embedded in the cement. The bristles, in addition to beingsecured by cement in the manner described, are charred or scorched by passing a hot iron or implement over the same, such charring serving to form enlargements or knobs on said" bristles, so as to absolutely prevent the same from being drawn through the cement and the l holes in the brush-back.

Instead of charring or scorching the bristles after the application of the cement, which has the tendency to cause the fluid cement to be more perfectly absorbed by the scorch extremities of the bristles, it is also proposed to first scorch or char the bristles, so as to form the enlargements or knobs thereon, and then pour the plastic cementover the same, such cement, when cool,serving as a layer which tenaciously holds the bristles. The cement used is preferably made of wax and rosin, in the proportions of two parts of the former to four parts of the latter.

After the bristles have been inserted and secured in the brush-back in the manner above stated, a covering cap or plate is cemented to the edges of the brush-back, so as to make a complete brush and finished article.

What I claim herein, however, and desire to secure by Letters Patent, is-

1. A device for inserting bristles into brushbacks, consisting of the perforated guide-block l and the apertured ring or plate 4, detachably secured thereto and constructed with the undercut inneredge, 7, for overlapping the edge of the brush, substantially as described;

2. The combination, in a device for inserting bristles into brush-backs, of the perforated guide-block 1, the apertured ring or plate 4, having the undercut inner edge, 7, to overlap the edge of the brush-back, the screwbolts passing through the guide-block and the undercut ring or plate, and nuts on the bolts, substantially as described.

In testimony whereofl affix my signature in presence of two witnesses.

EMIL KIPPER.

Witnesses:

RUssELL B. DEAN, HENRY ScHiiRMANN. 

